﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DAO
{
    class DataBase
    {
        private static DataBase instance = null ;

        public static DataBase GetInstance()
        {
            if (instance == null)
                instance = new DataBase();
            return instance;
        }

        public int GetSoLonNhat()
        {
            return 1;
        }
    }
}
